1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kvasek [131]
3 years ago
14

Find the real roots of the equation x^4-5x^2-36=0

Mathematics
1 answer:
Usimov [2.4K]3 years ago
6 0
Treat x^4 as the square of p:  x^4 = p^2.

Then x^4 - 5x^2 - 36 = 0 becomes p^2 - 5p - 36 = 0.

This factors nicely, to (p-9)(p+4) = 0.  Then p = 9 and p = -4.

Equating 9 and x^2, we find that x=3 or x=-3.
Equating -4 and x^2, we see that there's no real solution.

Show that both x=3 and x=-3 are real roots of x^4 - 5x^2 - 36 = 0.
You might be interested in
Hiii so i slept during class and i'm not tryna fail so can y'all help me out<br> ill give brainly
Gnom [1K]

Answer:

aw I sleep during class too

Step-by-step explanation:

(please dont report me for not giving the answer plzzz)

5 0
2 years ago
I reealllyyyy need helpp isss quizz
vova2212 [387]

Answer:

6

Step-by-step explanation:

i cant see the number correctly but the number on the top of the 7 is the answer

4 0
3 years ago
Read 2 more answers
Triangle ABC has angle measures as shown below. Using the information in the
iren [92.7K]
35 + 52 + 3(x + 2) = 180
87 + 3x + 6 = 180 ( add the like terms and use distributive property)
93 + 3x = 180
-93 -93
3x = 87
÷3 ÷3
x = 29
( the sum of all triangle angles is 180)
4 0
2 years ago
Read 2 more answers
Please answer question need help on quiz
zzz [600]

Answer:

x = 18 and x=0

Step-by-step explanation:

7 0
2 years ago
Remove parentheses and simplify 7a+6b-4 (3a-3b)
Varvara68 [4.7K]
Normally, you would do whatever is inside of the parenthesees first then do the rest but we cant get any further so we remove the parenthasees by distrubtion

7a+6b-4(3a-3b)
-4(3a-3b)
a(b+c)=(ab)+(ac)
-4(3a-3b)=-12a-(-12b)

7a+6b-12a+12b
7a-12a+6b+12b
-5a+18b
that's the asnwer
7 0
3 years ago
Other questions:
  • Can anyone help me with this?!?!
    10·2 answers
  • Is it possible to trisect any angle using only a compass and a straight edge
    11·2 answers
  • Please helpppp As soon as possible
    7·1 answer
  • A monomial of degree 7 and a leading coefficient of -3
    13·1 answer
  • Express the square root of -8 in i notation
    12·1 answer
  • The transformation maps ΔABC to ΔA'B'C'. Which statement is true about the transformation?
    12·2 answers
  • Solve for y<br><br> 2x + y = 7 <br><br> 6x + 9 = 9y - 2x
    8·2 answers
  • I'LL GIVE BRAINLIEST TO WHOEVER ANSWERS THE QUESTION CORRECTLY!!
    6·1 answer
  • WILL MARK BRAINLIST!!!!
    12·1 answer
  • Which line is perpendicular to AB line 1 line 2 line 3 line 4
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!